Sizing Chart

Helmet Size Hat Size Circumference (in.) Circumference (cm.)
Small 6 1/2 - 7 20" - 22" 51 - 56
Medium 6 7/8 - 7 3/8 21.6" - 23.2" 55 - 59
Large 7 1/4 - 7 3/4 22.8" - 24.4" 58 - 62